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#16
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OK, no codes now after a battery disconnect for about 30 minutes, ran the car, warmed it up, nothing. will need to find out why my emissions are too high.
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Chris G 92 Pearlie, sold @ ~209k miles. Now owned by Tim. Current Ride, 1985 Honda Aero 80, stock 3024 klms |
#17
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I've always wondered about the SVX knock sensors. They appear to be close, if not the same as Nissan's. Nissan has had knock sensor issues for years and years. Their sensors aren't really bad but I think the software is a bit too tight and causes the codes to appear without real concern.
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ASE Certified Master Automotive Technician w/L1. ASE Certified Master Medium/Heavy Truck Technician. Certified EVT (Emergency Vehicle Technician) |
#18
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I'm off to the forensic tailpipe proctology testing facility, will see what happens.
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Chris G 92 Pearlie, sold @ ~209k miles. Now owned by Tim. Current Ride, 1985 Honda Aero 80, stock 3024 klms |
#19
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The EGR malfunction is clearly the cause of your NOx problem. It takes time for the engine to reach the operating parameters required for it to set a code. Most trouble codes require two or more failures before causing a code to set.
I couldn't copy the charts I was going to post. Their owner has them embedded and protected from copying. HC is unburnt, raw fuel. CO is poorly burnt fuel. HC seems to be your big problem, the O2 code may actually be telling you something.
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ASE Certified Master Automotive Technician w/L1. ASE Certified Master Medium/Heavy Truck Technician. Certified EVT (Emergency Vehicle Technician) |
#20
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Quote:
anyways this time the HC is ok, and the CO went down quite a bit too: Hydrocarbons(HC) g/km Max: 0.5000, vehicle: 0.3815, Avg: 0.2338, Result PASS. Carbon Monoxide(CO) Max: 9.3200, Vehicle: 4.1212, Avg:1.9412, result: PASS Oxides of Nitrogen(NOx) Max: 1.2400, Veh: 1.7356, Avg: 0.9452, result: FAILED
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Chris G 92 Pearlie, sold @ ~209k miles. Now owned by Tim. Current Ride, 1985 Honda Aero 80, stock 3024 klms |
#21
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Quote:
-Bill (the insistant one....)
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Retired NASA Rocket Scientist Most famous NASA "Child" - OSIRIS-REx delivered samples from asteroid BENNU to Earth in Sept. 2023 Center Network Member #989 '92 Fully caged, 5 speed, waiting for its fully built EG33 '92 "Test Mule", 4:44 Auto, JDM 4:44 Rear Diff with Mech LSD, Tuned headers, Full one-off suspension '92(?) Laguna, 6 spd and other stuff (still at OT's place) My Locker |
#22
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Quote:
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Trevor, New Zealand. As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! |
#23
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If one wanted to go to the trouble they could retard the exhaust cams one tooth and not have to worry about an EGR or NOx. Of course the perf and mpg would take a little hit...
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ASE Certified Master Automotive Technician w/L1. ASE Certified Master Medium/Heavy Truck Technician. Certified EVT (Emergency Vehicle Technician) |
#24
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Quote:
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Trevor, New Zealand. As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! |
#25
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Planning on some Formula racing? Or narrowing the power to a higher, narrower region and using a reduction drive?
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ASE Certified Master Automotive Technician w/L1. ASE Certified Master Medium/Heavy Truck Technician. Certified EVT (Emergency Vehicle Technician) |
#26
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Quote:
If my memory is correct, Tom advanced both intake cams one tooth and saw no improvement in performance. I believe he did G-Tech runs in the 1. both intakes retarded one tooth, 2. both intakes advanced one tooth, and 3. both intakes in their stock location. The stock location gave the best performance. Tom - did I capture this correctly? -Bill
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Retired NASA Rocket Scientist Most famous NASA "Child" - OSIRIS-REx delivered samples from asteroid BENNU to Earth in Sept. 2023 Center Network Member #989 '92 Fully caged, 5 speed, waiting for its fully built EG33 '92 "Test Mule", 4:44 Auto, JDM 4:44 Rear Diff with Mech LSD, Tuned headers, Full one-off suspension '92(?) Laguna, 6 spd and other stuff (still at OT's place) My Locker |
#27
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www.svxfiles.com The first SuperCharged SVX, the first 4.44 gears, the first equal length headers, the first phenolic spacers, the first Class Glass fiberglass hood, the first with 4, 4.44s in his driveway Fiberglass Hood thread My locker 4.44 Swap link |
#28
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Quote:
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Trevor, New Zealand. As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! |
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